TREATMENT OF PHENOL AND CRYSTAL VIOLET DYE FROM WASTEWATER USING BIOSILICA HYDROGEL NANOCOMPOSITES
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Date
0024-01-18
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Abstract
In this study, adsorption of Phenol and Crystal Violet (CV) dye was investigated
while using adsorbent Biosilica hydrogel nanocomposites. Biosilica hydrogel
nanocomposites were prepared using the hydrogel extracted from okra mucilage
and silica extracted from sugarcane bagasse. To examine the functional groups
and morphology, these nanocomposites were characterized via Fourier Transform
Infrared Radiations (FTIR), and Scanning Electron Microscope (SEM). The batch
adsorption experiments were performed by varying factors such as pH, contact
time, adsorbent dose and initial concentration. From the results it was found that
the maximum removal of crystal violet was 83% at 0.1g/250mL, initial
concentration 30 ppm, pH 12 and contact time of 30 minutes. Phenol showed the
removal of 79% at optimum conditions i.e. dosage 0.4g/200mL, initial
concentration 10 ppm, pH 7 and contact time of 15 minutes. Langmuir was best
fitted for phenol (qm 16.28 mg/g) while Freundlich (qm 120.48 mg/g) for crystal
violet. Hence, the results indicate that the biosilica hydrogel nanocomposites
proved to be more effective for removal of crystal violet as compared to phenol.
Moreover, the synthesized adsorbent can be used as the efficient and cost effective alternative for the adsorption of toxic pollutants and coloring agents
from wastewater